Amaurosis FugaxCarotid StenosisCerebrovascular DisordersIschemic Attack, TransientStrokeBrain IschemiaCarotid Artery DiseasesRisk FactorsEndarterectomy, CarotidTime FactorsFollow-Up StudiesRecurrenceProspective StudiesCerebral InfarctionEndarterectomyTreatment OutcomeCerebral AngiographyIntracranial ArteriosclerosisIntracranial EmbolismCarotid Artery, InternalNeurologyIntracranial Arterial DiseasesIntracranial Embolism and ThrombosisAspirinMoyamoya DiseaseCarotid ArteriesVertebrobasilar InsufficiencyEmbolismTomography, X-Ray ComputedSecondary PreventionCohort StudiesAnticoagulantsSeverity of Illness IndexPlatelet Aggregation InhibitorsRetrospective StudiesPredictive Value of TestsMigraine DisordersAtrial FibrillationCerebral HemorrhageCerebral ArteriesInfarction, Posterior Cerebral ArteryRiskRisk AssessmentAge FactorsMagnetic Resonance ImagingCerebrovascular CirculationMagnetic Resonance AngiographyEmergency Medical ServicesComorbidityForamen Ovale, PatentDiffusion Magnetic Resonance ImagingIncidenceSulfinpyrazoneWarfarinReflex, BabinskiUltrasonography, Doppler, TranscranialAuscultationArterial Occlusive DiseasesBrainAcute DiseaseCerebral RevascularizationNeurologic ExaminationSymptom AssessmentPrevalencePrognosisQuestionnairesAngiographyComplement Membrane Attack ComplexPostoperative ComplicationsIntracranial HemorrhagesStentsDepressionUltrasonography, Doppler, DuplexAngioplastyCarotid Artery ThrombosisSex FactorsConstriction, PathologicIntracranial ThrombosisTiclopidineRegistriesHeadacheDipyridamoleHypertension